How Does A Tandem Gear Pump Work?
Tandem gear pumps deliver independent flow from one shaft. Learn how dual stage gear pumps power complex hydra…
| Parameter | Specification / matching information |
|---|---|
| Primary material / part number | 1155442011 |
| Associated catalogue part number | 803004128 |
| Additional catalogue reference | 5005210; verify against the original assembly |
| Pump model reference | CBGJ3100/1010C-XF |
| Alternative model spelling | CBGJ3100/1010C/XF; CBGj3100/1010C-XF |
| Other supplier model reference | JHP2100/Gj1010C-XF; configuration confirmation required |
| Permco-style seller reference | P4860-F100/10Y03G / PB4860-100; separate seller references, not certified interchange |
| Product type | Tandem / double external hydraulic gear pump |
| Hydraulic sections | Two gear-pump sections driven by a common shaft |
| Primary equipment reference | XCMG ZL50G wheel loader |
| Additional equipment reference | XCMG LW500KI; LW500K subject to original-pump configuration |
| System application | Loader working hydraulic circuit; match the machine parts catalogue |
| Shaft reference | 14-spline, approximately 31 mm shaft diameter appears in a seller listing; confirm actual supplied version |
| Mounting | Flange mounting; compare pilot diameter, fixing-hole spacing and flange thickness |
| Port connection | Front and rear ports have separate flange interfaces; confirm diameters, hole spacing and port orientation |
| Displacement | Exact displacement of the supplied assembly to be confirmed; model numbers alone are not a test certificate |
| Rated / maximum pressure | Exact assembly ratings not established by the available source records |
| Rated / maximum speed | Exact assembly ratings not established by the available source records |
| Rotation | Match the original pump and directional marking, viewed from the shaft end |
| Dimensions / weight | Confirm using the approved dimensional drawing; shipping-package figures are not pump dimensions |
| Image reference | Three different supplier catalogue photographs for 1155442011 / 803004128 |
| Supplier / brand | Olive Branch Hydraulics; aftermarket supply matched to the confirmed configuration |
Olive Branch Hydraulics supplies aftermarket hydraulic gear pumps identified by the original material number, pump model and installation configuration. The 1155442011 double gear pump is listed for XCMG ZL50G and LW500KI wheel-loader applications. It is also found under material number 803004128. For a replacement enquiry, include both numbers when they appear on your old pump or machine parts list.
This is a tandem external gear-pump assembly with a large front section and a smaller rear section. The two sections share a drive shaft and have distinct hydraulic connections. Compare the complete assembly, including its shaft, mounting flange and port arrangement, before selecting a replacement. Similar-looking pumps for different loader configurations can have different drive connections and hydraulic requirements.
| Search reference | Correspondence |
|---|---|
| 1155442011 | Primary part number for this product enquiry |
| 803004128 | Associated number explicitly listed with 1155442011 in supplier catalogues |
| 5005210 | Additional catalogue reference grouped with 803004128 and CBGJ3100/1010C-XF |
| CBGJ3100/1010C-XF | Model linked to 1155442011 / 803004128 |
| CBGJ3100/1010C/XF | Alternative punctuation used in supplier parts lists |
| JHP2100/Gj1010C-XF | Related model reference listed with 803004128; compare the actual configuration |
| P4860-F100/10Y03G; PB4860-100 | Other seller model descriptions associated with 1155442011; confirm shaft and dimensions before treating as an alternative |
These references help identify catalogue records and prepare a quotation. A matching search result does not establish that every model spelling or supplier version has identical mounting dimensions, rotation or ratings. Do not use the broad P5100-F100CX designation as an automatic substitute: parts lists also associate that model with the separate material number 803004078.
| Equipment | Application / fitment condition |
|---|---|
| XCMG ZL50G | Supplier catalogues list 1155442011 / 803004128 for the loader hydraulic working pump |
| XCMG LW500KI | An exact 1155442011 double-pump listing identifies this equipment |
| XCMG LW500K | Included in the product information supplied for this enquiry; confirm the loader variant and original pump before ordering |
The catalogue references above concern wheel loaders. They do not establish universal compatibility across every XCMG machine or all production years. Provide the machine model and serial number, the original pump label and photographs of the front flange and hydraulic ports. This allows the enquiry to be matched to the correct assembly instead of relying only on the loader family name.
A seller describes a 1155442011 version with a 14-spline shaft of approximately 31 mm diameter. Treat that as a version reference and measure the actual shaft, including spline count, diameter and projection. Check the mounting pilot, bolt pattern and coupling engagement. Confirm the rotation from the pump marking using the shaft-end viewing convention.
Both pump sections need their port sizes and flange-hole spacing checked. Identify the inlet and outlet connections from the approved drawing or pump markings. Exact displacement, continuous pressure, maximum pressure and speed ratings must come from the selected assembly specification or test record. The available catalogue records identify parts and equipment but do not supply a complete verified performance curve for this particular assembly.
The three gallery photographs show different views published for the 1155442011 / 803004128 assembly: the side ports, the opposite housing side and the rear section. They are supplier catalogue references. Colour and minor appearance details of the supplied pump should be confirmed with the quotation photographs.
When asking for a 1155442011 hydraulic pump, 803004128 double gear pump or CBGJ3100/1010C-XF loader pump, send the material number together with the old-pump model and equipment details. Include photos of the shaft, nameplate, flange and both sides of the assembly, plus dimensions where the old identification plate is missing. Olive Branch Hydraulics can use this information to prepare a configuration-specific replacement enquiry.
Part-number and model associations were cross-checked against the Shantui-XCMG Parts supplier catalogue and Luseng parts list. LW500KI identification appears in Xiamen Doolin's exact 1155442011 listing. Photographs are from Xuzhou Shangheng's 1155442011 / 803004128 listing. Equipment and brand names are used for compatibility identification.
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